Burnham’s real test begins at the Treasury

For all the attention surrounding Andy Burnham’s arrival in Downing Street, it is clear that the most consequential appointment in his new government is his Chancellor, former Defence Secretary, John Healey MP.

Burnham enters office with a political mandate built around change. His first speech as Prime Minister promised a “new economic model”, greater devolution, stronger public control of essential services and a more interventionist approach to government. Yet the market reaction over the last week demonstrates that investors remain less interested in the rhetoric of change than in the practical question of who controls the Treasury. 

Reports regarding speculation over potential Chancellor appointments moved markets before Burnham had even crossed the threshold of No.10. Investors had viewed the Chancellor selection as a proxy for the future direction of fiscal policy and whether Burnham would govern as the pragmatic mayor who worked with business in Greater Manchester, or as the political figure who has challenged economic orthodoxies. 

Burnham’s previous comments about not wanting Britain to be “in hock to the bond markets” were met with a nervous reaction. Although he has subsequently reiterated his commitment to existing fiscal rules, the episode highlighted a tension that will likely define the early months of his premiership: how to deliver a more activist state while maintaining market confidence. 

JPMorgan chief executive Jamie Dimon has issued a stark warning against any attempt by the Burnham government to raise taxes on banks. Dimon argued that targeting the sector would have “adverse consequences” for investment and warned policymakers against assuming banks could simply absorb higher taxes without changing behaviour. 

The immediate challenge for Burnham is therefore not merely proving that he can deliver change. It is convincing investors, businesses and voters simultaneously that change can be delivered without repeating the mistakes that have made markets so sensitive to fiscal risk in the first place.

The Chancellor may have been appointed, but the judgement on Burnham's economic credibility has only just begun.